Concrete-wall form



Feb. 5, 1924 1,482,434

. M. S. HOTCHKISS CONCRETE WALL FORM Filed Nov. 1', 1921 Var-for Patented Feb. 5, 1924.

MARK 1s. noTon Iss, or aonnsonorry, new. YORK. i

commas-WALL roam.

ApplicationfiIeiINmTember 1, 1921*. Serial No. 511,985.

To a ZZ whomz't may concemfi- Be it known that I, MARK S. HoToHKrss, of Johnson City,'in the county of- Broonie,

in the State of New York, have invented new and useful Improvements in Concrete Wall Forms, of whichthe following-,taken in connection with the accompanying dr aw ings, is a full, clear, and exact description.

This invention relates to concrete" wall forms of the sectional orpanel type capable of being progressively erected tier bytier orpanel by panel from the bottom upward as the construction work of the wall progresses and also of being easily and quickly removed after the concrete has hardenedor; set sufficiently to be self-sustainlng.

The main object is to provide simple and efficient means whereby the panel forms and their supportsmay be expeditiously erected as the work progresses, and removed as the work is finished for reuse in other places.

Another object is to provide means for bracing the panel-supporting-studs as they 2 are erected to hold them in parallel or proper relation to each other for the reception of thev panels.

A further object is to providethe upi right panel-supporting-studs with means for attachment'to suitable staging or scafiolding to facilitate the continued erection; of

superposed panels.

Other objects anduses relatingto specific parts of the form will be brought out in the following description In the drawings:

Fig. l is a perspective View of the forms as used for constructing concrete walls around the corner of'the'buildinge Fig. 2' is an enlarged vertical sectional view of a portion of one of the upright studs and adjacent end of one of the scafl' folding supports showing the interlocking connection between those parts;

Fig. 3 is a horizontal sectional view through one of the studs/and adj acent ends portions of and adjacent portion of one of the panels" tions showing the interlocking connections between those parts;

Fig.-- 6 is a detail sectional View taken in the plane o-f-line 6 .96, Fig; 5.

Fig: "7is'. a--detail sectional View of the upper endofone-of the braces and adjacent portion of one of the upright studs Show ing the interlockingconnection between one of those parts; i i

Fig.-- 8'isfan inner-face-viewof one of the studs showing-the same interlocking connection'. l

Figs. 9 and 10- are, respectively, side elevations of thev lowerendf of the brace showing the" foot by which it is secured" to the ground or otl'ierusuitablesupport.

Fig. 11 is an enlarged detaihsectional' View taken in the plane of line 11-41, Fig. 8;.

In the construction of concrete wallswith the forms shown, a footing-course -A preferably ofconcrete is'fi'rst laidto the de sired depth and widthfor supporting the wall and after the. footing course has become sufficiently hardened orset, a series ofi sheet metal studs laresupported thereon in upright parallel positions and preferably in uniformly spaced relation longitudinally at the inner and outer sides ofthe-pr-oposed wall directly oppositeeach other, and are held against outward displacement by braces 2 -or receiving be tween them sheet metal panels -3-, said columns being held against inward displacement by braces of substantially the same length as the width of-the wall, the columns -being drawn tightly against the ends of-the braces tby twistedwires- 5 or'equivalent tightening means.

()ne or more sheet metal partitions -6 may be placedin operative position between the inner and outerpanels toform headers for window anddoor revealsand any other openings which it maybe desired to leave in the walls. i

The studs are preferably made of heavy sheet metal rolled; or otherwise pressed in the form of channel bars having their channels as 7- facing inwardly and their inneredges bent: outwardly to form laterallyprojecting fianges -8- in substan ti'ally the same flat plane, the opposite upright sides of each stud and its upright flanges 8- constituting guides for receiving the adjacent ends of the panels -3- and holding the latter against inward or outward displacement as will be hereinafter more fully described.

The braces 2, which also perform the function of guy-rods are preferably made mainly of wood and are provided at their lower and upper ends with metal inserts 9-- and l0-- firmly secured thereto, the insert -9 being provided with a foot -11- adapted to rest upon the ground or other suitable support, said foot being provided with an aperture -12 for receiving a stake or holding pin -13--, which is driven into the ground to firmly hold that end of the brace -2- in its adjusted position. The upper insert -10 is provided with a T-shaped head 14 adapted to enter a key-hole-slot l5- in the center of the stud -l for interlocking engagement therewith, and thereby to hold the stud in an upright position with its lower end restin upon the footing course -A-.

he T-shaped head '14ris somewhat wider but of slightly less thickness than the width of the slot -15-, which is of slightly greater length. than the width of the head 14- so that in attaching the brace 2 to the stud, it is necessary to turn said brace to approximately a horizontal position to permit the entrance of the head 1lthrough the slot ---15-- whereupon the brace is returned to incline downwardly and its lower end is fastened by the stake to the ground or another available support or if it is to be secured to a superposed staging, the foot --11-- may be provided with additional apertures -12 for receiving screws adapted to enter said staging.

Only one of these braces -2-- is shown but it is to be understood that each upright stud 1- will be supported by a similar brace at both the inside and outside of the wall;

The panels -3 are preferably of uniform size convenient for handling except at the corners where they are usually bent to conform to the angles at the corners, both at the inside and outside of the walls as shown in Fig. 1, but the opposite upright edge-s of each panel are provided with outturned returned flanges 16 of slightly less width than half the width of the channel -7-- of the stud --lso that the ad jacent flanges l6 may slide freely in said panel as the panels are raised and lowered, thereby holding the panels in operative engagement with the studs against displacement in one direction, the portions of the panels adjacent each stud being provided with additional out-turned lugs -17- constituting locking members for interlocking engagement of the outer faces of the flanges -.8, while the main bodies of the panels engage the inner faces of said flanges, thereby holding the panels against inward or outward displacement and also holding the studs in an upright position against inward, outward or lateral movement relatively to the panels.

In other words, the flanges -16 and lugs -l7 constitute what may be termed slidable interlocking connection with the studs land permits the panels to be successively installed in operative position by the studs from the bottom upward with the lower edges of the superimposed panels resting upon the upper edges of the underlying panels, while the lower edges of the bottom panels rest upon the footing course A-.

The cross-braces l are also preferably made of wood cut to a length corresponding to the thickness of the wall and placed across the intervening space between opposite studs so as to abut against the inner faces of the corresponding panels in which position they are held by tightening the tie-wires5--.

These tie-wires -5- are also extended across the intervening space between the inner and outer panels preferably close to the braces 4- and have their ends suitably anchored to the opposite upright studs -1 preferably by forming loops 18 on the ends of the tie-rods and passing said loops through apertures in the longitudinal centers of the studs where they are fastened by keys or pins l9-, thus permitting the inner portion of the tie-rods to be twisted by any suitable implement until the inner faces of the panels are drawn tightly against the ends of the braces l-, which latter prevent inner collapsing of the studs and panels and hold them in parallel upright relation while the tightened tie-rods 5 serve to hold the studs and panels against outward displacement.

The partitions 6 may be of any desired height and may be placed in any position required to form the upright sides of any door or window reveal or other opening, but preferably extends entirely across the intervening space of the panels and are provided along their opposite upright edges with lugs 20 projecting through apertures or slots 21- in the panels -3, said lugs being provided with transverse apertures for receiving wedges or keys -22 by which the partitions are securely fastened to the opposite panels, (see Figs. 5 and 6).

As the Work progresses, it becomes necessary to provide suitable staging or scaffolding at the outside as well as the inside of the wall and consisting, in this instance of horizontal bars 23, mainly of wood, upright wooden studs --2l and wooden plank or platform 25-.

The horizontal bars -23- are provided at one end with metal inserts 26 having hook-shaped end lugs 27- adapted to enter vertically elongated slots -28 in the longitudinal centers of the metal studs 1- as shown in Figs. 2 and 3 for detachably interlocking engagement therewith, the outer ends of said bars -23 being provided with metal side straps --29 bolted through the upright studs 24.

The lower and upper edges of the several panels -3- are provided with out-turned flanges 31 for reinforcing purposes and also to afford handles by which they may be placed in operative position and removed when necessary. 4 a

In assembling the form sections, a brace 2- may be attached to one of the upright studs 1 in the manner described and the stud with the brace thereon may then be placed in operative position upon the footing course A and properly plumbed by shifting the foot of the brace along the ground or upon any suitable support after which the stake 13 is driven into the ground to hold the brace and stud 1 attached thereto in its upright position, it being understood that the lower end of the stud is substantially flat and wide transversely to assist in holding it in a vertical position against movement lengthwise of the wall.

The adjacent panels are then interlocked with the opposite flanges 8 of the stud by downward sliding engagement therewith until the lower edges of the lowermost panels rest upon the footing course and thereby assist in firmly holding the stud against tilting movement in either direction lengthwise of the wall.

The partition 6- if used, may then be operatively connected to the panels at one side of the stud. The panels at the opposite side of the wall, which are to be attached to the partition, may then be placed one upon the other and secured thereto by the adjacent keys -22- in which case, the studs at the corresponding sides of the wall which are to interlock with those panels may be slid downwardly from the top into interlocking engagement with the edges thereof but where the partition 6 is not and enable both the inner and outer tiers of the panels to be erected in parallel relation, the cross-braces 4 and tie-wires -5- being employed to further stiffen the forms during progressive erection of the concrete wall, the members 4. being removed as the work progresses.

What I claim is:

1. In a concrete wall form, a channel iron stud adapted to be supported in an upright position and provided with opposite laterally projecting lengthwise flanges, and a panel extending across the inner face of one of the flanges and provided with an outward projecting flange engaging the inner face of the adjacent side wall of the channel, said panel having a portion thereof engaging the outer face of the flange of the stud to hold the panel against inward displacement from said stud.

2. In a concrete wall form, the combination of a channel iron having opposite lengthwise flanges and constituting a stud, means for holding the stud in an upright position, panels slidable lengthwise of and upon said flanges and engaging the inner and outer faces thereof to hold the panels and studs against relative inward or outward displacement, said panels having portions thereof pro'ecting into the channel of the stud to 1101 the panels against lateral displacement from the stud.

In witness whereof I have hereunto set my hand this 22 day of October, 1921.

IVIARK S. HOTCHKISS.

Witnesses:

B. C. SEIPP, WM. W. Ron. 

